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Issue 71, 2017
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Thermo-mechanically responsive crystalline organic cantilever

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We report thermo-mechanically responsive and thermochromic behavior in the single crystalline organic semiconductor butoxyphenyl N-substituted naphthalene diimide (BNDI). We show that initially monoclinic single crystals of BNDI undergo a single-crystal to single-crystal transition to a triclinic phase. This transition accompanies large changes in the crystal packing, a visible decrease in crystal size, reversible thermochromic behavior, and motion including bending, jumping, and splitting. We have shown that by fixing single crystals to a surface, we can harness the energy of the phase transition to create a single crystal cantilever capable of lifting weights with masses nigh two orders of magnitude heavier than the single crystal itself.

Graphical abstract: Thermo-mechanically responsive crystalline organic cantilever

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The article was received on 05 Jun 2017, accepted on 10 Aug 2017 and first published on 21 Aug 2017

Article type: Communication
DOI: 10.1039/C7CC04346E
Chem. Commun., 2017,53, 9890-9893

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    Thermo-mechanically responsive crystalline organic cantilever

    M. Dharmarwardana, R. P. Welch, S. Kwon, V. K. Nguyen, G. T. McCandless, M. A. Omary and J. J. Gassensmith, Chem. Commun., 2017, 53, 9890
    DOI: 10.1039/C7CC04346E

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